Multi-material component and methods of making thereof

Patent metadata

Field	Value
Publication number	US-11318566-B2
Application number	US-202017097869-A
Country	US
Kind code	B2
Filing date	Nov 13, 2020
Priority date	Aug 4, 2016
Publication date	May 3, 2022
Grant date	May 3, 2022

Abstract

A multi-material component joined by a high entropy alloy is provided, as well as methods of making a multi-material component by joining materials with high entropy alloys to reduce or eliminate liquid metal embrittlement (LME) cracks.

First claim

What is claimed is:

1. A multi-material component comprising:
a first member;
a second member proximal the first member; and
a third member, wherein at least a first portion of the third member is provided on a first surface of the first member that is opposite the second member,
wherein at least one of the first member and the second member comprises iron and has a coating,
wherein the coating comprises Zn,
wherein the first portion of the third member comprises a first high entropy alloy comprising at least four principal major elements, and
wherein one of the at least four principal major elements is Co.

2. The multi-material component of claim 1 , wherein one of the at least four principal major elements is Cu.

3. The multi-material component of claim 1 , wherein one of the at least four principal major elements is Fe.

4. The multi-material component of claim 1 , wherein one of the at least four principal major elements is Mn.

5. The multi-material component of claim 1 , wherein one of the at least four principal major elements is Ni.

6. The multi-material component of claim 1 , wherein one of the at least four principal major elements is Zn.

7. The multi-material component of claim 1 , wherein the first high entropy alloy comprises at least one principal minor element, wherein the at least one principal minor element comprises Zn.

8. The multi-material component of claim 1 , wherein two of the at least four principal major elements are Cu and Zn.

9. The multi-material component of claim 1 , wherein one of the at least four principal major elements is Cu, and wherein the first high entropy alloy further comprises at least one principal minor element, the at least one principal minor element comprising Zn.

10. The multi-material component of claim 1 , wherein both of the first member and the second member comprise iron and have a coating, wherein the coating comprises Zn.

11. The multi-material component of claim 1 , wherein the third member further comprises at least one of:
a second portion, wherein the second portion of the third member is provided on a first surface of the second member that is opposite the first member, and
an interlayer portion, wherein the interlayer portion of the third member is provided between the first member and the second member.

12. The multi-material component of claim 11 , wherein the third member comprises both the second portion and the interlayer portion.

13. The multi-material component of claim 12 , wherein at least one of the second portion and the interlay portion comprises a second high entropy alloy that is different from the first high entropy alloy.

14. The multi-material component of claim 12 , wherein at least one of the second portion and the interlay portion comprises the first high entropy alloy.

15. The multi-material component of claim 1 , wherein the high entropy alloy comprises a mixing entropy of greater than 1.5 R.

16. A multi-material component comprising:
a first member comprising a first metal or a first metal alloy;
a second member proximal the first member, the second member comprising a second metal or a second metal alloy; and
a third member, wherein a first portion of the third member is provided on a first surface of the first member that is opposite the second member,
wherein at least one of the first metal or first metal alloy and the second metal or second metal alloy comprises iron and has a coating,
wherein the coating comprises Zn,
wherein the first portion of the third member comprises a first high entropy alloy comprising at least four principal major elements,
wherein one of the at least four principal major elements is Cu.

17. The multi-material component of claim 16 , wherein one of the at least four principal major elements is Fe.

18. The multi-material component of claim 16 , wherein one of the at least four principal major elements is Mn.

19. The multi-material component of claim 16 , wherein one of the at least four principal major elements is Ni.

20. The multi-material component of claim 16 , wherein one of the at least four principal major elements is Zn.

21. The multi-material component of claim 16 , wherein the first high entropy alloy comprises at least one principal minor element, wherein the at least one principal minor element comprises Zn.

22. The multi-material component of claim 16 , wherein both of the first member and the second member comprise iron and have a coating, wherein the coating comprises Zn.

23. The multi-material component of claim 16 , wherein the third member further comprises at least one of:
a second portion, wherein the second portion of the third member is provided on a first surface of the second member that is opposite the first member, and
an interlayer portion, wherein the interlayer portion of the third member is provided between the first member and the second member.

24. The multi-material component of claim 23 , wherein the third member comprises both the second portion and the interlayer portion.

25. The multi-material component of claim 24 , wherein at least one of the second portion and the interlay portion comprises a second high entropy alloy that is different from the first high entropy alloy.

26. The multi-material component of claim 24 , wherein at least one of the second portion and the interlay portion comprises the first high entropy alloy.

27. The multi-material component of claim 16 , wherein the high entropy alloy comprises a mixing entropy of greater than 1.5 R.

28. A method of making a multi-material component comprising:
providing a first member;
providing a second member proximal the first member;
providing a third member, wherein a first portion of the third member is provided on a first surface of the first member that is opposite the second member; and
joining the first member to the second member to form the multi-material component,
wherein at least one of the first member and the second member comprises iron and has a coating, wherein the coating comprises Zn,
wherein the high entropy alloy comprises at least four principal major elements, and
wherein one of the at least four principal major elements is Co, Cu, or Zn.

29. The method according to claim 22 , wherein both of the first member and the second member comprise iron and have a coating, wherein the coating comprises Zn.

Assignees

• Honda Motor Co Ltd
• Colorado School Of Mines

Inventors

• Hu Jianxun
• Walker Eric
• Yu Zhenzhen
• Abdelmotagaly Abdelrahman
• Schneiderman Benjamin

Classifications

• B32B15/011

  all layers being formed of iron alloys or steels · CPC title

• B23K35/3073 Primary

  with Mn as next major constituent · CPC title

• B23K2103/04

  Steel {or steel} alloys · CPC title

• B23K2101/34

  Coated articles {; Surface treated articles} · CPC title

• B32B2311/30

  Iron, e.g. steel · CPC title